| | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| | 2 | /* |
| | 3 | * Copyright (C) 2008 Michal Simek <monstr@monstr.eu> |
| | 4 | * Copyright (C) 2006 Atmark Techno, Inc. |
| | 5 | */ |
| | 6 | |
| | 7 | #ifndef _ASM_MICROBLAZE_CHECKSUM_H |
| | 8 | #define _ASM_MICROBLAZE_CHECKSUM_H |
| | 9 | |
| | 10 | /* |
| | 11 | * computes the checksum of the TCP/UDP pseudo-header |
| | 12 | * returns a 16-bit checksum, already complemented |
| | 13 | */ |
| | 14 | #define csum_tcpudp_nofold csum_tcpudp_nofold |
| | 15 | static inline __wsum |
| | 16 | csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len, |
| | 17 | __u8 proto, __wsum sum) |
| | 18 | { |
| | 19 | __asm__("add %0, %0, %1\n\t" |
| | 20 | "addc %0, %0, %2\n\t" |
| | 21 | "addc %0, %0, %3\n\t" |
| | 22 | "addc %0, %0, r0\n\t" |
| | 23 | : "+&d" (sum) |
| | 24 | : "d" (saddr), "d" (daddr), |
| | 25 | #ifdef __MICROBLAZEEL__ |
| | 26 | "d" ((len + proto) << 8) |
| | 27 | #else |
| | 28 | "d" (len + proto) |
| | 29 | #endif |
| | 30 | ); |
| | 31 | return sum; |
| | 32 | } |
| | 33 | |
| | 34 | #include <asm-generic/checksum.h> |
| | 35 | |
| | 36 | #endif /* _ASM_MICROBLAZE_CHECKSUM_H */ |
projects / linux-2.6-block.git / blame_incremental